How did our ancestors transition from a nonsymbolic, nonlinguistic cognitive state to a symbolic and linguistic one?

Born in England and raised in East Africa, Ian Tattersall is a paleoanthropologist and an emeritus curator with the American Museum of Natural History in New York City. Currently, his major research focus is on how modern humans acquired a unique style of thinking, and how we managed to dominate the planet while other human species went extinct. Learn More »